I have about a 1500 items of CallItem class in List collection.
This is description of CallItem:
I geting all records and bindind they to GridView like this:
And when I (or user) drag and dropping column (for example AbonentNumber) on grouping panel I need to waiting about 35 seconds.
if I heed to waiting about 35 seconds when I need grouping 1500 records then how long I need to waiting if I must grouping about 15000 records or 150000 records?
How i can increase performance of grouping in GridView? Or may be for my task I dont need to use GridView and grouping?